Pilot-light system for elevators.



P T. KENNY. PILOT LIGHT SYSTEM FOR ELEVATORS.

APPLICATION FILED ATTG. 1. 1908.

Patented May 9, 1911.

A TTORNE Y.

PAUIZ T. KENNY, or EWYYORK. NUY'.

.2 Is the ear; 3 is the ordinary light in the PILOT-LIGHT SYSTHEIMJ'FOR ELEVATORS.

- Specification of Letters Patent.

Patented May 9,1911.

Application filed August 1,1908. Serial No. 446.430.

To all whom it may concern: I v

lie it known that l.. lAi'i. T. KENNY. a

citizen of the United States,;n2sidingat New vYork cit Nev York, have invented certa' 1 n" no w and useful Imp'iovenieins in .l ilot-Ljght Systems for lllevatols. of which to iollo'n'ingisa clear, full, and exact do; 'ription. i

Myinrcntion relates'to anfelevator signaling apparatus and pm'ticularly what T have termedya pilot light, system for sig naling the operator of the carat certain:

times, such as on Sundays and holidays when the ear normally remains at'tlieground floor and does not'inake regular trips as. it does upon the other ordinarydays.

My Invention will be set forth 11] the chums.

in the drawin n Figure 1 re n'csents nw inrehtion asaapplied to, the construction illustrated in the Smallevd; Reiners lateut. 826,752; and Fig. 2 is a detail of o'nc of the sets of switches with the correspondingsetting and restoring magnets.

tn the above embodiment ofiny invert tion, 1 is a source of st pfjly for the signal inthe car, such as an ordinary dynamo, and

car for sigi ialing the. operator to stop. at

the floors when the car makes re ular tri )s.

4;. to 1.5 are up and' down signal lights stationarily located at the different floors outside of the shaft for signaling to p the; intending passenger thuttliecar is proaching. H 16 to 27 are up "and down pushbutton switches at the, dltlercnt floors for operation by the intending passenger.

to 44 are the down mercury pots each of which is 'provided. with a pivoted switch arm, such as 4-5. Each offthese switch arms is controlled by a mechanism such as shown in Fig. 2, that. is, it is normally held .in raised position by a detent 48 which is drawn toward magnet 46 when the corre- I sponding push-Llmtton is pushed, so as to release arm 45 and allow the same to drop in the mercury pot.

49 is a restoring magnet; for restorin the .parts to normal position. The up si e of the commutator at'the left of the diagram is provided with similars thercury pots,

atjthe ground floor "on\a Sunday whenlthere switch-arms and restoringand setting magnets.

The fixed;:ommutator plates 28, 29, etc,

areshownftogether with moyingbrushcs 55,

brushes v j ilatctiii and 36, the light 3 in the car Will light up to tell the operator to stop at the floor. When brushes 55, 56 bridge contacts.

, ingsa-id brushes. as the foregoin forms no part of my invention asit is well knownfin the art, as it is described in the said Smalley 1K: .Reiners patent and is in 'common use in buildings throughout the United 56. 5t).- (30 and 73. H; for the down side, and 7T. 81. 85.87. and S8. S9 for the up side; which travel over the contact plates to make the muinections at the propertinies- (.8 to 72, T5 and ltHto it) are stationary restoring contacts traveled over by the brushes for energizing: the restoring mag-L nets in succession to restore theincrcury pot arms to normal conditional the proper-times Hupposiug tlmt a passenger outhe floor on which is located push-binton switch 22 desires togo downp IIe pushes thisswitehto l he position shown. \\;'hieh,' w1ll energize mag not it and drop arm". 9:51am the mercury pots as shown, and.'whcn the down G0 brid e stationary contact 3(3 and 30, it will close the circuitto down light 10 on the floorto tell the operator that; the car coming-a After the passenger has been taken aboard and the car noves on downwardly, brushes 73. 74 will bridge plates 75 and L70 and energize restoring magnet 49, thus restoring the switchto nor mal ositionand ln'ea'kingthe circuits.

V ten the ea 1' is moving downwardly, the

51)].111Sl1QS2Uf0 in positionas shown, that is the brushes for thedo\vn" ,or right-handside arein position tocontaet with the platesjust i'nentionethibiit the brusheson the up or left-hand side have beenautomaticall moved to such position that the 1 brushes only contactewith the strips 194? 103, 102,101, etc, thereby being substantially inoperative. I have not thodght it necessary to show the construction forrshifb many States.

As. my invention I have added to the airs of above a second electric signal, such as im f electric lamp 7a,.in the car andtwotadditional rows of mercury pots a to j, with connections from them, tothe wires and 126, and have added a cut-outswitch min' the lightrcircuit. i

Assuming, now, that the. car isstanding is very little travel, and the carfldoes not.

, up the light and the light will remain go. He immediately starts up and when will immediately light up because a circuit will be closed from the dynamo l to the mercury ot 0, back by wire 125 through the li ht an to the dynamo. This will mmediately tell .the operator that there is a passenger on a'fioor, but will not tell him in which direction that passenger wishes to e approaches the oor on which the assenger is, the light 3 in the car will 11 ht up. telling him to'stop at that-floor. e then takes on the passen er and continues on until his pilot light 0 is extinguished. This will not occur until he reverses his direction of. movement and starts downwardly and passes the said floor when the restoring brushes 73, 74 will energize the restoring magnet 49. If two or more passengers on different floors have pressed their buttons, the light will remain lighted until all the restoring Ina nets corresponding to the buttons pressed ave been energized. In other words, the pilot light will remain on until all passengers have been taken aboard, as it will be observed that the mercury pot switches a to y' are in parallel across the circuit to the pilot light, whereby the closing of any one of them will immediatel light lighted until all the switches have been opened. The pilot light will also light up at whatever time a switch is closed, that is, it makes no difference where the car is or in what. direction it is moving, as the pilot light will light up at once as soon as any switch is closed. The up restorin mechanism on the left-hand side of the iagram successively opens only the switches correspond- 111g to the upt buttons when the car is moving up, and the down restoring mechanism on the right-hand side of the diagram successively opens only the switches which correspond to the down buttons when the car is moving down. The cut-out switch m will be left open when the car makes regular trips on ordinary days, as the pilot light is is not then used, but on Sundays and holidays the switch will be closed inoider to make use ofthe pilot light.

What I claim is:

1. In a signaling apparatus for elevators in combination, an electricall -operated sigml in the car, a source 0 electromotive force, up and down assengers buttons at each floor, a normal y-open switch corresponding to each button and closed by operation of the same, said switches being con-- nected in parallel in said signal circuit and- 2. In a signaling apparatus for elevators in combination, an electrically-operated signal inthe car, a source of electromotive force, up and down assengers buttons at each floor, a normal y-open switch corresponding to each button and closed h operation of the same, said switches eing connected in parallel in said signal circuit and constructed and arranged to close the signal circuit at .whatever time a switch is closed, up restoring mechanism successively opcnin" only the switches corresponding to the up buttons when the car is moving up, and down restoring mechanism successively opening only the switches correspmuling to the down buttons when the car is moving down, a second elcctrically-operated sig nal in the car, circuits in parallel for operating the same, means for closing said circuits comprising a part moved correspondingly with the movement ,of the car and switch mechanism controlled at least in part by said push-buttons whereby said circuits for said second signal cannot be closed by the apparatus until a push-button has been pushed and the car approaches the floor on which said push-lmtton is located.

Signed at New York, N. Y. this 30th day of July 1908.

PAUL T. KENNY. Witnessw:

EMERSON R. Nnwrnn, BEATRICE Mmvis. 

